Rocker-shoe.



No. 755,423. PATENTED MAR. 22, 1204. 0. A. WILLIAMSON.

ROCKER SHOE.

APPLICATION FILED AUG. 27, 1903.

vmawtoz UNITED STATES Patented March 22, 1904.

PATENT QEEiCE.

ROCKER-SHOE.

SPECIFICATION forming part of Letters Patent No. 755,423, dated March22, 1904.

Application filed August 27, 1903. Serial No. 170,985. (No model.)

To aZZ whom itmay concern:

Be it known that 1, CHARLES ALEXANDER WVILLIAMsoN, a citizen of theUnited States,re siding at New Cumberland, in the county of Cumberlandand State of Pennsylvania, have invented certain new and useful Improve'ments in Rocker-Shoes; and I do declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

My invention relates to certain new and useful improvements in rockersfor rockingchairs, cradles, and the like; and it consists in a pneumaticshoe which may be readily attached to or removed from the ordinaryrockers of chairs, cradles, or similar articles.

The object of the invention is to provide a device of this characterwhich is simple in construction, efflcient and durable in use, andcomparatively inexpensive of production.

With this and other objects in view the invention consists of certainnovel features of construction, combination, and arrangement of parts,as will be more fully described, and particularly pointed out in theappended claim.

In the drawings, Figure 1 is a perspective view of arocking-chair,showing the application of my invention thereto. Fig. 2 is a verticallongitudinal sectional view through one of the rockers with the shoeattached. Fig. 3 is a vertical transverse sectional view through thesame. Fig; i is a detail perspective view of one of the attaching-platesReferring to the drawings by numerals, 1 denotes a rocking-chairprovided with the usual rockers 2, the ends 3 of which are flat andbeveled inwardly, as seen in Fig. 2.

4: denotes my improved pneumatic rockershoes, which are detachablysecured upon the rockers 2. Said shoes 4 may be made of any suitableflexible elastic material; but I preferably make them of rubber, andeach comprises a curved body portion 5, within which an air-chamber 6 isformed. The bottom 7 of each of said shoes is slightly curved, as seen1n Fig. '3, to present as little bearing or contact surface as possibleto the carpet, floor, or ground upon which the chair rests, and the top8 of each of said shoes engages the bottom of one of the rockers 2 andis formed with side flanges 9 and end flanges 10, which flanges engagethe sides and ends of the rockers 2 to hold the shoes 4 upon the same.The end flanges 10, as shown in Fig. 2 of the drawings, are inclinedinwardly to correspond with the bevel or incline of the ends 3 of therockers 2, and thus the shoes 4: are prevented from slipping off of therockers or becoming casually disengaged therefrom. In applying andremoving the shoes 4: they are stretched slightly to enable their endflanges 10 to be engaged with the ends 3 of the rockers, as will bereadily understood.

11 denotes an attaching-plate which may be provided at each end of theshoes 4 to fasten them more securely upon the rockers. Said plates aresubstantially triangular in shape, the bases of the same,which areformed with apertures 12, are embedded or molded in the end flanges 10,as seen in Fig. 2, and the upper ends 13, which engage the ends 3 of therockers, are provided with screw-apertures 14, through which screws maybe passed to secure them upon said ends 3.

The rear wall of each of the air-chambers is provided with a valve 15,which may be of any desired construction and through which air is forcedinto said chamber 6 to inflate the shoes 4.

The operation of my invention will be readily understood from theforegoing de scription taken in connection with the accompanyingdrawings, and it will be seen that a chair, cradle, or the like providedwith my improved pneumatic shoes will not only add materially to thecomfort of the user, but will reduce the wear and tear of the carpet orother floor-covering upon which the chair or cradle rests.

Various changes in the form, proportion, and the minor details ofconstruction may be resorted to without departing from the principle orsacrificing any of the advantages of this invention.

Having thus fully described my invention, what I claim as new, anddesire. to secure by Letters Patent, is

In an elastic shoe for rockers, the combination of side flangesembracing the sides of the rocker, converging end flanges embracing theends of the rocker, and plates embeddedin the'end flanges, said plateshaving openings through which the material comprising the flangesextends, said plates forming means for 1 fastening the shoe to therocker.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

CHARLES ALEXANDER WILLIAMSON.

Witnesses:

LEE GOODMAN, HAZEL V. W. OYSTER.

